Make cvsbug(1) actually work instead of aborting due to missing configure

script substitution markers.

gnu/usr.bin/cvs/cvsbug/Makefile

@@ -16,6 +16,11 @@ CLEANFILES+=    cvsbug
 cvsbug: cvsbug.in
 	version=`sed < ${CVSDIR}/configure \
 	    -e '/^[     ]*VERSION=/!d' -e 's/.*=["'\'']\{0,1\}\([^"'\'']*\)["'\'']\{0,1\}/\1/' -e q`; \
-	sed -e "s,@VERSION@,$${version}-FreeBSD,g" ${.ALLSRC} > ${.TARGET}
+	sed -e "s,@VERSION@,$${version}-FreeBSD,g" \
+	    -e "s,@MKTEMP@,/usr/bin/mktemp,g" \
+	    -e "s,@PACKAGE_BUGREPORT@,bug-cvs@gnu.org,g" \
+	    -e "s,@SENDMAIL@,/usr/sbin/sendmail,g" \
+	    -e "s,@MKTEMP_FUNCTION@,," \
+	    ${.ALLSRC} > ${.TARGET}
 
 .include <bsd.prog.mk>